Device for treatment of iron alloys in vessel

Abstract

A device for processing iron alloys in a vessel is described. A reaction chamber for receiving at least one alloying material is arranged in the bottom of the vessel and a sprue of refractory material is arranged concentrically above the reaction chamber to form a gap between the lower end of the sprue and the upper delimitation of the reaction chamber.

1. A device for processing iron alloys in a vessel comprising:
 a reaction chamber for receiving at least one alloying material; and 
 a sprue, 
 wherein a recess is formed in the bottom of the vessel concentric with the reaction chamber, and that the sprue is arranged concentrically above the reaction chamber to form a gap between the lower end of the sprue and the upper delimitation of the reaction chamber. 
 
   
   
     2. A device as claimed in  claim 1 , wherein the depth of the recess from the bottom of the vessel is at least three times the outer height of the gap, and that the diameter of the recess is at least twice the diameter of the reaction chamber. 
   
   
     3. A device as claimed in  claim 2 , wherein the depth of the recess from the bottom of the vessel is at least 20 mm, and that the diameter of the outer recess is at least 30 mm greater than the diameter of the reaction chamber. 
   
   
     4. A device as claimed in  claim 1 , wherein the cross-sectional area and height of the reaction chamber are dimensioned to achieve the desired content of the alloying material for the given processing volume, that the inner diameter of the sprue is the same as or smaller than the upper diameter of the reaction chamber, and that the cross-sectional area of the gap is dimensioned for the desired flow of metal.